Intimate relationships matter to health and happiness, and the field of relationship science is vast. However, the scope of the field and the abundance of precise micro-theories has presented obstacles to the development of integrative theories with contextual-behavioral science foundations that are oriented towards application of findings in domains of public health significance. Derived from the well-validated Interpersonal Process Model, which described intimacy as a dyadic exchange in which Person A engages in a vulnerable self-disclosure, Person B enacts a response, and Person A perceives the response as responsive, we present an integrative, analytic-abstractive, contextual-behavioral science model of intimate relations. The model describes the intimacy process as a set of functional relations between the behavior of Person A and a response of Person B, languaged as middle-level terms to facilitate cross-disciplinary applications. Three primary relations of the model are non-verbal emotional expression (Person A) and safety (Person B), verbal self-disclosure (Person A) and validation (Person B), and asking (Person A) and giving (Person B). The model also emphasizes the importance of self- and other-awareness and expressions of closeness as additional terms. Future research directions and potential applications are discussed.